Here's some suggestions (all of which I'm making to myself as well as you):

1. Make a plan.

Start with Jenny Zhang's guide to activism for frustrated Canadians, it's filled with good ideas on how to get started. Give yourself some goals (like an activist FitBit): write a letter a week, call one of your representatives every month, attend a local meeting to learn about a cause that energizes you, organize your friends to join you. It's easy to go Hell Ya! We Marched! and then go back to regular life. Now's the time to create a new habit of being involved.

2. Do something concrete.

Retweeting or posting stuff to Facebook is good to spread the word, and yes, politicians pay attention to social media, but it's NOTHING compared to writing a real letter, phoning your MPP or attending a meeting. It's free to mail your MPP and the printed word in an envelope is considered much more important than a Tweet. Show those in power you mean business.

3. Do what you can, and try to do a bit more.

Contacting your elected officials or donating money to an important cause might be what fits your current life/circumstances/comfort level. Great, keep doing that. But, also consider making new connections to organizations, or attending a public consultation. Stretching yourself will benefit the causes you care about and expand your sphere of activism.

4. If you're a straight, white woman of privilege, do better.

Frankly, I'm doing pretty fucking great on the societal hierarchy. Yes, I experience patriarchy and sexism, but I need to use my privilege to ensure other women have a voice and that their needs take priority. When I'm writing those letters or attending meetings or calling my representatives, I'm telling them that women who are poor, racialized, disabled, Indigenous, and/or LGBTQ disproportionately bear the burdens of our current structures and they need to listened to. I'm not always going to get it right (privilege is pernicious that way) but I'm learning. I'm also donating to causes that benefit marginalized women in Canada and internationally.

5. Keep knitting.

Seriously, self care is important. If you want your knitting to do more than keep you calm, consider knitting things for women in shelters or newly arrived refugees. Knitting for yourself is cool too: This is Canada; we need to keep warm when we take to the streets.